Urban Ladder Interview Questions and Answers

If concrete cube fails after 28 days of casting, investigate the cause and take corrective measures.

• Investigate the cause of failure

• Check if the mix design was correct

• Check if the curing was done properly

• Take corrective measures to prevent future failures

• Re-cast the concrete cube for further testing

PEB components are pre-engineered building components that are manufactured off-site and assembled on-site.

• PEB components include primary framing, secondary framing, roof and wall panels, and accessories.

• Primary framing consists of columns, rafters, and beams that support the weight of the building.

• Secondary framing includes purlins, girts, and eave struts that provide additional support for the roof and walls.

• Roof and wall panels are the outermost layer of the building and p...read more

The best cement depends on the specific project requirements and conditions.

• Portland cement is commonly used for general construction purposes.

• White cement is used for decorative purposes.

• Rapid hardening cement is used for quick construction projects.

• Low heat cement is used for massive concrete structures.

• Blast furnace slag cement is used for marine structures and road construction.

• The choice of cement should be based on factors such as strength, durability, setting time, and...read more

PEB structures use various types of steel depending on the requirements.

• Primary framing members are made of hot rolled I-sections or built-up sections.

• Secondary framing members are made of cold formed C or Z sections.

• Roof and wall panels are made of galvanized steel sheets.

• Bolts and nuts are made of high strength carbon steel.

• Tension members are made of high strength steel cables or rods.

• Examples of steel grades used are ASTM A36, ASTM A572, and ASTM A588.

Material testing on site is crucial for ensuring quality and safety of construction projects.

• Various tests are conducted on materials like concrete, steel, and soil to ensure they meet the required standards.

• Tests include compressive strength, tensile strength, and moisture content.

• Testing equipment like slump cones, compression machines, and moisture meters are used on site.

• Results of material testing are recorded and analyzed to ensure compliance with project specifications...read more